[77newell]

I wonder if it's less about how to deal with the problems that can or will develop as a result of sitting than just about exercising periodically or not. Some things that can happen while sitting include moisture accumulating in fuel tanks and engines due to the daily temperature cycle causing these things to breathe in and out. Also, some rubbery parts that need to flex as part of their operations may gradually take a set when stationary especially if setting in a highly flexed position. Batteries have a slow internal discharge rate. The oils in tires congregate gradually while setting.

There are multiple solutions to most of these. For instance, if your unit is stored in a way that minimizes daily temperature changes you solve the moisture accumulation problem, you can alternatively cap the tank vents, engine breather, inlet and exhaust with big plastic bags that expand and contract with temperature changes but no new air with moisture enters the system. You can use your car to recharge the coach's batteries, yes it's a bit slow but it may be easier than driving the coach or removing the batteries. Bumping the slide in and out just a tad helps the seals squish around enough that they probably won't return to the exact same position. Bumping the starter on the engine is probably enough to help those seals. Tires are a hard one, there are those that let them sit for months and have no problems and there are those that exercise them regularly and have problems. My answer is to keep them shaded and properly inflated and then drive more slowly for as long as possible after extended storage.

My point is not that the solutions mentioned above are the "right" answer but rather that it's more useful to choose from a set of options what will work best for your particular situation. There is no absolute right or wrong to exercising the coach or not, it seems to depend on your circumstances.